Why You Need to Wrap Your Car Key Fob in Foil
No, it has nothing to do with UFOs.
Should your key fob be wearing foil?
Put tinfoil over your head and you’re crazy, but if you put tinfoil around your car key fob, you’re a genius. (Here are seven car maintenance jobs you can do yourself.)
Turns out thieves can use devices that will amplify fob signals to cars or copy the code to get into a vehicle. (Find out how the colour of your car affects your chances of getting into an accident.)
So why wrap your car keys in foil? Well, your car waits for a signal from the fob and thieves can grab fob signals. But if your car key fob is wrapped in tinfoil, it will decrease the signal.
Not only should you keep your car keys in foil, you should do it at home, too. Toss your keys into an old coffee can to prevent someone from stealing your car key fob’s signal.